Solder for aluminum



OFFICE.

JULIAN SEGURA, OF NEW YORK, N. Y.

SOLDIER FOR ALUMINUM.

No Drawing.

To all whom it may concern:

Be it known that I, JULIAN Section, at sub'ect of the Kingdom of Spain, residing at ew York, in the county of New York, State of New York, have invented certain new and useful Improvements in Solder for Aluminum; and I do hereby declare the fol lowing to be .a full, clear, and exact do: soription of the invention, such as will en able others skilled in the art to which it ap-' pertains to make and use the same.

My invention relates to improvements in soldering aluminum, and particularly to a solder, which, while dispensing with the lieressity of having aluminum itself as :1 )art of its composition will serve to unite pates or sheets of aluminulnsoldered by it by a bond which does not crystallize or change its permanent character, in any notable de gree, even after long continued use. Particularly, the solder constituting the subject matter of the invention-is adapted for the soldering not onlyof aluminum per so, but also aluminum alloys of widely varying composition.

'l ie ingredients of my improvedsolder are zinc, tin, lead, and white metal. The preferred composition of the white metal is 88.9 parts, by weight, of tin; 7 .4: parts, by

weight, of antimony;and 3.7 parts, by weight, of copper; so that by the use ofwhite meta l in the solder I have a ready means of introducing copper into it. As is well known, in white metal, the tin has a range of from 80 to 90%, antimony from 5 to 15%, and copper from. 3 to 10%.

The preferred proportions, by weight, of

Specification of Letters Patent.

Patented June 22, 1920.

Application filed m 11;, i920. Serial No. 352,858.

the solder are as follows: 49 parts, by weight, of zinc; 40 parts, b wei ht, of tin; 10 parts, by weight, of lead; emf] part, by weight, of white metal.

Some latitude may, however, be tolerated in compounding the solder; thus, for i11 stance, the proportions, by weight, may vary as follows: zine 40 to 50 parts; tin 35 to parts; lead 10 to 20 parts; white metal 1 to 5 parts.

In applying the solder to the aluminum parts to be united, care must be taken to energetically scrub the surfaces of the aluminum of the intended joint with a stiit metal brush so asto clear the surfaces from all foreign adhesions. The soldering may then be eifected by a soldering iron and the solder in the usual manner known to the soldering art.

Iaving thus described my invention what I claim is: v 1. A solder for aluminum composed of zinc ranging from 40 to parts, tin rang- 'ing from 35 to 45 parts; leadranging from' 10 to 20 parts; and white metal ranging from 1 to 5 parts (the composition of the White metal ranging from 80 to 90% tin, 5 to 15% antimony, anti 3 to 10% copper).

2. A solder for aluminum consisting of 49 parts of zinc; 40 parts of tin; 10 parts of lead: and '1 part of white metal the composition of the white metal ranging from 80 to 90% tin, 5 to 15% antimony, and 3 to 10% copper).

In testimony whereof I affix my signature.

JULIAN SEGURA. 

